Date/time math & timezones API

Timezone conversion, calendar/business-day arithmetic, durations between timestamps, and a market-open check. Answers queries like 'convert this time to EST', 'add 5 business days', 'how long between these dates', 'is the stock market open now'.

Price$0.01per request

MethodPOST

Route/v1/util/datetime

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

utildatetimetimezonebusiness-daysdurationmarket-hoursdate

API URLhttps://x402.hexl.dev/v1/util/datetime

Integration docs

Example request

{
  "op": "add",
  "datetime": "2026-06-02T00:00:00Z",
  "days": 5,
  "businessDays": true
}

Example response

{
  "op": "add",
  "from": "2026-06-02T00:00:00.000Z",
  "days": 5,
  "businessDays": true,
  "result": "2026-06-09T00:00:00.000Z"
}

Input schema

{
  "type": "object",
  "required": [
    "op"
  ],
  "properties": {
    "op": {
      "type": "string",
      "enum": [
        "convert",
        "add",
        "diff",
        "is-market-open"
      ]
    },
    "datetime": {
      "type": "string",
      "description": "ISO 8601"
    },
    "timezone": {
      "type": "string",
      "examples": [
        "America/New_York"
      ]
    },
    "days": {
      "type": "number"
    },
    "businessDays": {
      "type": "boolean"
    },
    "from": {
      "type": "string"
    },
    "to": {
      "type": "string"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}